Water, Air, & Soil Pollution

, Volume 219, Issue 1–4, pp 157–174 | Cite as

Comparison of Relationships Between pH, Dissolved Oxygen and Chlorophyll a for Aquaculture and Non-aquaculture Waters

  • Changjuan Zang
  • Suiliang Huang
  • Min Wu
  • Shenglan Du
  • Miklas Scholz
  • Feng Gao
  • Chao Lin
  • Yong Guo
  • Yu Dong


The relationships between pH, dissolved oxygen (DO) and chlorophyll a in aquaculture and non-aquaculture waters are assessed in this paper. The research includes the evaluation of field and experimental studies at the Panjiakou Reservoir (between Aug and Oct 2009) and the review of international data covering two decades. The results indicated that typical eutrophic non-aquaculture water had mean concentrations of chlorophyll a of higher than 10 μg L−1, and significant positive correlations were found between pH, DO and chlorophyll a. When the mean concentration of chlorophyll a was less than 10 μg L−1, no correlation was found between DO and chlorophyll a for waters with a high exchange rate or heavily organically polluted natural waters. Diurnal variations were found for both pH and DO. A corresponding significant positive correlation was found between both water quality parameters. In general, when the mean concentration of chlorophyll a was less than 10 μg L−1 within aquaculture waters of low exchange rate, only a weak or no correlation at all was found between pH, DO and chlorophyll a during summer and autumn. On the other hand, a significant positive correlation between pH and chlorophyll a and a significant positive correlation or no correlation between DO and chlorophyll a were found for aquaculture waters with a high exchange rate during summer and autumn. Strong diurnal variations for both pH and DO were identified. A significant positive linear correlation between pH and DO was found for field enclosure experiments.


Aquaculture Carp Correlation analysis Diurnal water quality variations Eutrophic waters Organic pollution 


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Changjuan Zang
    • 1
  • Suiliang Huang
    • 1
  • Min Wu
    • 1
  • Shenglan Du
    • 1
  • Miklas Scholz
    • 2
    • 3
  • Feng Gao
    • 4
  • Chao Lin
    • 5
  • Yong Guo
    • 5
  • Yu Dong
    • 2
    • 3
  1. 1.Numerical Simulation Group for Water Environment, Key Laboratory of Pollution Processes and Environmental Criteria of the Ministry of Education, Key Laboratory of Environmental Remediation and Pollution Control in Tianjin, College of Environmental Science and EngineeringNankai UniversityTianjinChina
  2. 2.Civil Engineering Research Group, School of Computing, Science and EngineeringUniversity of SalfordSalfordUK
  3. 3.Institute of Infrastructure and Environment, School of EngineeringThe University of EdinburghEdinburghUK
  4. 4.Water Transfer Sub-Division from Luanhe River of Water Environment Monitoring CenterHaihe River Water Conservancy CommissionHebeiChina
  5. 5.Haihe Water Resources Protection BureauHaihe River Water Conservancy CommissionTianjinChina

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